"Frying tonight", cooking the Spitfire engine

[HagarTheHorrible]

What am I doing wrong, I don't seem to be able to regulate the oil temp ?

 

Bearing this in mind, I'm only doing training flights, even if I follow what I take to be the set RPM settings for cruise or climb, within a few minutes I've cooked my engine.

 

Cruise, as I understand it, should be unlimited time at 2650 and +7lbs boost while climb should be 2850 at +12lbs boost for 30 min max.  I try these in level flight and cook the engine after a few minutes.  Water radiator temps are never an issue, but oil, good grief, every time. 

 

If oil was such an issue why put it in such a piddly little radiator ?

[54th_Glitter_]

Check if the problem is boost +12 instead of boost +9 at 2850 rpm

 

Engine modes:
Max Cruising power (unlimited time): 2650 RPM, boost +7
International power (up to 30 minutes): 2850 RPM, boost +9
Emergency Max All Out power (up to 5 minutes): 3000 RPM, boost +16

 

Otherwise you should have no problem, checking water radiator too.

[unreasonable]

I concur.  Pilot's notes also say 2850 +9

 

Just had a nice flight around staying within these limits (although I usually get coolant a bit overheated during the take-off) and had no problem with keeping oil under 90 degrees once I had got airborne.  Moscow autumn map - summer maps might be trickier?

[HagarTheHorrible]

Check if the problem is boost +12 instead of boost +9 at 2850 rpm

 

Engine modes:

Max Cruising power (unlimited time): 2650 RPM, boost +7

International power (up to 30 minutes): 2850 RPM, boost +9

Emergency Max All Out power (up to 5 minutes): 3000 RPM, boost +16

 

Otherwise you should have no problem, checking water radiator too.

 

 

Sorry I meant to say +9, not 12 but you're obviously right. I'll double check my boost setting at 2850.  That said i still managed to cook my engine at 2650 and +7, which took all of 8 minutes, more or less.  I also made sure i didn't go much below 180 mph more than once or twice, just to be on the safe side.

[BlitzPig_EL]

You are opening the water radiator as necessary, yes?  It is not automatic, and if the coolant temp is too high it will have an effect on oil temp.

[unreasonable]

Good point - I suppose the lesson is look after the coolant and the oil will take care of itself.

[HagarTheHorrible]

You are opening the water radiator as necessary, yes?  It is not automatic, and if the coolant temp is too high it will have an effect on oil temp.

 

 

Yeh, silly me !!!!!

 

I was misreading the water radiator gauge and hadn't realized it had such a profound effect on the oil temp.

 

Just me being utterly thick.  I suppose it doesn't help jumping between different planes, different playing styles and different sims. It's easy to confuse a poor boy like me.

 

In my defense, the less than optimal image quality in VR doesn't help when it comes to reading gauges accurately.  A poor excuse I know but there you have it, I've very slopping shoulders, family trait, accept no responsibility.

Edited July 8, 2017 by HagarTheHorrible

[ACG_KaiLae]

Spitfire oil radiator cannot be adjusted. You can only adjust the water radiator. The water temperature is the limiting factor anyway. Both the spitfire and hurricane work this way.  

[Finkeren]

The Merlin overheats really fast with closed radiator, but once opened just a bit, 20 or 40%, the cooling is really effective. I've had prolonged dogfights at very low speeds at combat power (2850/+9) with just 20% radiator with no issues on the summer map. 

[LukeFF]

40% is the recommended standard water radiator setting, which I believe comes from the original wartime documentation.

[SCG_Fenris_Wolf]

Yeh, silly me !!!!!

 

I was misreading the water radiator gauge and hadn't realized it had such a profound effect on the oil temp.

 

Just me being utterly thick. I suppose it doesn't help jumping between different planes, different playing styles and different sims. It's easy to confuse a poor boy like me.

 

In my defense, the less than optimal image quality in VR doesn't help when it comes to reading gauges accurately. A poor excuse I know but there you have it, I've very slopping shoulders, family trait, accept no responsibility.

Use supersampling without advanced supersampling filter, found in steamvr settings. Disable AA in-game (made for 2D!).

 

Have fun reading gauges and IDing aircraft clearly.

[=TBAS=Sshadow14]

Not tested it yet.

but how much cooling effect does mixture have on Spit?

[=EXPEND=CG_Justin]

Not tested it yet.

 

but how much cooling effect does mixture have on Spit?

As far as I know mixture has a more profound impact on cylinder head pressure and EGT more so than overall temp. I could be wrong though.